Q on passive biamping

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Certain power amps, LC Audio's Zapsolute, EndMillenium, and AKSA's potentially, allow separate output transistor pairs to drive biwired speakers 'independantly'. Assuming a passive crossover without impedence compensation at the crossover point, each quasi independant output stage is going to see a higher impedence outside of its intended frequency range. Its easier to concepualize this assuming initially a simple 6db crossover ie, a cap in series on the HF and a coil in series on the LF, though the actual implementation might well call for a higher order paralell crossovers.
While this might not be as advantageous as line level bi, tri...amping (you're still subject to the phase machinations of the passive crossovers), are there advantages with regards to this approach vis-a-vi power handling, etc...?
Would this approach be limited to amps that lack feedback (other than local) around the output stage?
Thanks in advance.
Paul

LC Audio Amps

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Topic - Q on passive biamping - pmkap 09:00:29 06/10/01 (0)

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